Ball-and-socket joint for mounting firearms on shields, parapets, and the like.



A. B. REVELLI. BALL AND SOCKET JOINT FOR MOUNTI NG FIREARMS 0N SHIELDS; PARAPETS/AND THE LIKE.

APPLICATION FILED OCT-16,1916.

PatentedSept. 25, 1917.

he :King ef Italy, residing at 15 0 1 ICE;

" A I ELB Ei EL' e EyE Lttgei TUB-LIVE, ITALY;

- pfiN'TING FIRFLAieMS 10 SHIELnSiPl-ifiAPETS v itjknown that I, 'A IEL" B TEL REYELLI, e1 in the Italian armyyand .asubject 7 Cor "exact .deScriPtiOh 'o f 'th i will 1 enable tothers ws'killecl l spheriealgzene; ;e e icient, that the plate prbvide Wi a th f f" of spherical 20 n i 2) fhavingf H O Oppesitesides 5 each? iiieasuri 9 thing l'esls thaiii the circumfei'ence gthe pheric'ahzene of; the. opening 2 'isamad 'lin'drical withradiameteif quahto that hei ical gsulfface5 in brder' te allow,

the central-:iplatie 6 throiigh parts" (if the inner "Surface of the may 1 suitably extend (as in the hm t m'gkepe s hefical to] awn a itate? When thislattel -isheing introduced in' th shield, in its only exact position, in-

two spherical surfaces 8 m'ayf rotate e correspondingspherical. cayities'f'df the f ielcll. 1The; tWQ opposite Sides 8 of the .1 plate fi are-equal to about 31 of the circumij reneeand have the. form of a spherical; zone Corresponding to that of the opening 2; oitfwhichth'ey maylslidewith Soft, frictiony i hile the 1W0 "intermediate: lsides 9 r are cylindrical,- their d ameter be mailer ,than the Shortest di a v a a y e tiionsh'o'wnin Fig 3;"W inguit to rotate :thro'ug perpendicular to the shie lsurfaees will'vlie-on one an'eth "arms; 11 shieldafiparapets a pro'irided in'these-latte I aj spherical Zone and-"011 in} a number arts, to allowthe-{,intf uct'iOI of a: pla alto infform f'o'f a s'phericalTzene and but 'a [eel-responding niurib'e'r efiparts, it the two surfacesfin form of spherical zon'eislid' ,o'n bne aliotherflwith a sOftP friction; i 'In socket and ball jointf o'rrmo m "fi 'a'rms on a s pport, an -openingrprov d PP at n rjg 'u'rface of which is 111 forin jof sphericalzonehlaving-two y- I ndriclal .fpoftihs of the fsamejdiame he spherical zone, said portions me than" if the ei rCum'f" extending Suitably i mkness' oftheshieldf e ceiitralvplate hieh' is securedthebarre1' fi 1"0pp' site sides; of which fa spherical: zdne' corres'p "of the opening, While the int 'feylindrica'l and." of? smaller than the shortest diameter of the In testimony that I claim the foregoing as spherical Zone, 1n order to allow its mtromy mventlon I have slgnecl my name 111 10 v cluctlon 111 the shlelcl openlngjwhen 1n the presence of tWo subscrlbing wltnesses.

right position and to secure it in place by 5 means of a rotation of 90, thus allowing the ABIEL BETEL REVELLI' sighting in all directions through clisplace- Witnesses: ment about the center of the spherlcal sur- JACOHECGI FERRUGGIO, face. NORAH Wnx'rns'ronn.

Copies of this patent may be obtained for fiv'e cents each, by addressing the Commissioner of Patents,

3 7 Washington, D. G. 

